LEDs are highly energy-efficient because:
They convert 80–90% of electricity into light.
Only about 10–20% is lost as heat.
In contrast:
Incandescent bulbs convert only 10% of energy into light; 90% is wasted as heat.
CFLs are more efficient than incandescent bulbs but less efficient than LEDs.
Why LEDs Save More Energy
LEDs are highly energy-efficient because:
They convert 80–90% of electricity into light.
Only about 10–20% is lost as heat.
In contrast:
Incandescent bulbs convert only 10% of energy into light; 90% is wasted as heat.
CFLs are more efficient than incandescent bulbs but less efficient than LEDs.
Wattage Comparison (for same brightness)
| Brightness (Lumens) | LED (Watts) | CFL (Watts) | Incandescent (Watts) |
|---|---|---|---|
| 450 lumens | 4–5 W | 9–11 W | 40 W |
| 800 lumens | 8–10 W | 13–15 W | 60 W |
| 1600 lumens | 16–20 W | 23–30 W | 100 W |
Example:
Replacing a 60W incandescent bulb with a 10W LED saves 50 watts per hour.
If you use it for 5 hours/day:
Energy saved per day = 50 W × 5 hours = 250 Wh = 0.25 kWh
Monthly saving = 0.25 × 30 = 7.5 kWh
Annual saving = 90 kWh per bulb
Assuming electricity cost is $0.12/kWh:
Annual savings = $10.80 per bulb
Multiply that across multiple bulbs, and the savings are substantial.
How Long Do LEDs Last?
| Bulb Type | Average Lifespan |
|---|---|
| LED | 25,000 – 50,000 hours |
| CFL | 8,000 – 10,000 hours |
| Incandescent | 750 – 1,200 hours |
| Halogen | 2,000 – 4,000 hours |
| Feature | LED | Traditional Bulbs |
|---|---|---|
| Energy Use | Very Low | High (mostly heat) |
| Cost to Run | Very Low | High |
| Lifespan | 25,000 – 50,000 hrs | 750 – 10,000 hrs |
| Maintenance | Rarely needed | Frequent replacements |
| Total Savings | Up to $150–$200 per bulb | Low or none |
At Bangladesh Sunlight Technology, we make choosing lights easy. Our carefully designed collections bring you modern, reliable, and timeless lighting solutions.
We deliver premium-quality LED lighting at the best value. From our own innovations to trusted partner products, every option is built for efficiency and durability.
We understand lighting can feel complex. Our expert and friendly support team is always ready to guide you toward the right solution with confidence.
At Bangla BaTi, we go beyond just lighting—we deliver innovation, reliability, and future-ready solutions tailored to your lifestyle, business, and projects.
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